Half Life 1 - 2005-9ish (Doesn't seem that way because no one knew in the 90s what life would be like NOW)
Half Life 2 - 2020-30ish? (Notice all the technological improvements, psuedo-modern weapons, etc.)

As we know, time is relative and nonlinear. This means that it bends and can be bent. The diagram is actually a very bad example, because it makes it seem as if we're bending reality, but we are, in fact, simply moving two points closer to each other. The "reality loop" represents the actual passing of time, whereas the "point of stasis" represents the bridge between two times. We can use this point of stasis to go from earlier time to later time faster than reality. If you don't get it, watch Deja Vu. They have a very good analogy in it.

Half Life 1 - 2005-9ish (Doesn't seem that way because no one knew in the 90s what life would be like NOW)
Half Life 2 - 2020-30ish? (Notice all the technological improvements, psuedo-modern weapons, etc.)

"Most of the game is set in a remote desert area of New Mexico in the Black Mesa Research Facility, a fictional complex that bears many similarities to both the Los Alamos National Laboratory and Area 51, between the years 2000 and 2009."

As we know, time is relative and nonlinear. This means that it bends and can be bent. The diagram is actually a very bad example, because it makes it seem as if we're bending reality, but we are, in fact, simply moving two points closer to each other. The "reality loop" represents the actual passing of time, whereas the "point of stasis" represents the bridge between two times. We can use this point of stasis to go from earlier time to later time faster than reality. If you don't get it, watch Deja Vu. They have a very good analogy in it.

Such a bad diagram that it sounds like you masturbated to that shitty book 'A wrinkle in time'.

Half Life 1 - 2005-9ish (Doesn't seem that way because no one knew in the 90s what life would be like NOW)
Half Life 2 - 2020-30ish? (Notice all the technological improvements, psuedo-modern weapons, etc.)

Isn't Half-Life 2 set in mid-Cold War era (1950s-1990s) USSR? I've always thought the game was set in the 1950s.